iOS pop使用通知传值

- (IBAction)buttonClick:(id)sender {

    //添加 字典，将label的值通过key值设置传递

    NSDictionary *dict =[[NSDictionary alloc]initWithObjectsAndKeys:self.textFieldOne.text,@"textOne",self.textFieldTwo.text,@"textTwo", nil];

    //创建通知

    NSNotification *notification =[NSNotification notificationWithName:@"tongzhi" object:niluserInfo:dict];

    //通过通知中心发送通知

    [[NSNotificationCenter defaultCenter] postNotification:notification];

    [self.navigationController popViewControllerAnimated:YES];

}

在发送通知后，在所要接收的控制器中注册通知监听者，将通知发送的信息接收

- (void)viewDidLoad {

    [super viewDidLoad];

    //注册通知

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tongzhi:) name:@"tongzhi"object:nil];

}

- (void)tongzhi:(NSNotification *)text{

    NSLog(@"%@",text.userInfo[@"textOne"]);

        NSLog(@"－－－－－接收到通知------");

}